[U-Boot] [PATCH v2 3/6] video: cfb_console: logo can be positioned via the splashpos variable

Anatolij Gustschin
2012-09-01T22:29:25Z

From: Bastian Ruppert <Bastian.Ruppert@Sewerin.de>

Extend the driver for placing the video/bmp logo as specified
by "splashpos" environment variable.

Signed-off-by: Bastian Ruppert <Bastian.Ruppert@Sewerin.de>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
CC: Tom Rini <trini@ti.com>
CC: Stefano Babic <sbabic@denx.de>
---
v2:
- remove some ifdefs
- revise commit log
- adjust video_logo_height by video_logo_ypos and thus
fix return address for video console offset
- add BMP_ALIGN_CENTER case to logo_plot() for proper logo
offset calculation if "m" specifier is used in splashpos

drivers/video/cfb_console.c | 88 ++++++++++++++++++++++++++++++------------
1 files changed, 63 insertions(+), 25 deletions(-)

diff --git a/drivers/video/cfb_console.c b/drivers/video/cfb_console.c
index 19d061f..81e5e08 100644
--- a/drivers/video/cfb_console.c
+++ b/drivers/video/cfb_console.c
@@ -66,7 +66,11 @@
* CONFIG_CONSOLE_TIME - display time/date in upper right
* corner, needs CONFIG_CMD_DATE and
* CONFIG_CONSOLE_CURSOR
- * CONFIG_VIDEO_LOGO - display Linux Logo in upper left corner
+ * CONFIG_VIDEO_LOGO - display Linux Logo in upper left corner.
+ * Use CONFIG_SPLASH_SCREEN_ALIGN with
+ * environment variable "splashpos" to place
+ * the logo on other position. In this case
+ * no CONSOLE_EXTRA_INFO is possible.
* CONFIG_VIDEO_BMP_LOGO - use bmp_logo instead of linux_logo
* CONFIG_CONSOLE_EXTRA_INFO - display additional board information
* strings that normaly goes to serial
@@ -369,6 +373,8 @@ static void *video_fb_address; /* frame buffer address */
static void *video_console_address; /* console buffer start address */

static int video_logo_height = VIDEO_LOGO_HEIGHT;
+static int video_logo_xpos;
+static int video_logo_ypos;

static int __maybe_unused cursor_state;
static int __maybe_unused old_col;
@@ -1488,8 +1494,21 @@ void logo_plot(void *screen, int width, int x, int y)
int ycount = video_logo_height;
unsigned char r, g, b, *logo_red, *logo_blue, *logo_green;
unsigned char *source;
- unsigned char *dest = (unsigned char *) screen +
- ((y * width * VIDEO_PIXEL_SIZE) + x * VIDEO_PIXEL_SIZE);
+ unsigned char *dest;
+
+#ifdef CONFIG_SPLASH_SCREEN_ALIGN
+ if (x == BMP_ALIGN_CENTER)
+ x = max(0, (VIDEO_VISIBLE_COLS - VIDEO_LOGO_WIDTH) / 2);
+ else if (x < 0)
+ x = max(0, VIDEO_VISIBLE_COLS - VIDEO_LOGO_WIDTH + x + 1);
+
+ if (y == BMP_ALIGN_CENTER)
+ y = max(0, (VIDEO_VISIBLE_ROWS - VIDEO_LOGO_HEIGHT) / 2);
+ else if (y < 0)
+ y = max(0, VIDEO_VISIBLE_ROWS - VIDEO_LOGO_HEIGHT + y + 1);
+#endif /* CONFIG_SPLASH_SCREEN_ALIGN */
+
+ dest = (unsigned char *)screen + (y * width + x) * VIDEO_PIXEL_SIZE;

#ifdef CONFIG_VIDEO_BMP_LOGO
source = bmp_logo_bitmap;
@@ -1592,42 +1611,61 @@ static void *video_logo(void)
char info[128];
int space, len;
__maybe_unused int y_off = 0;
+ __maybe_unused ulong addr;
+ __maybe_unused char *s;

-#ifdef CONFIG_SPLASH_SCREEN
- char *s;
- ulong addr;
-
- s = getenv("splashimage");
+#ifdef CONFIG_SPLASH_SCREEN_ALIGN
+ s = getenv("splashpos");
if (s != NULL) {
- int x = 0, y = 0;
+ if (s[0] == 'm')
+ video_logo_xpos = BMP_ALIGN_CENTER;
+ else
+ video_logo_xpos = simple_strtol(s, NULL, 0);

- addr = simple_strtoul(s, NULL, 16);
-#ifdef CONFIG_SPLASH_SCREEN_ALIGN
- s = getenv("splashpos");
+ s = strchr(s + 1, ',');
if (s != NULL) {
- if (s[0] == 'm')
- x = BMP_ALIGN_CENTER;
+ if (s[1] == 'm')
+ video_logo_ypos = BMP_ALIGN_CENTER;
else
- x = simple_strtol(s, NULL, 0);
-
- s = strchr(s + 1, ',');
- if (s != NULL) {
- if (s[1] == 'm')
- y = BMP_ALIGN_CENTER;
- else
- y = simple_strtol(s + 1, NULL, 0);
- }
+ video_logo_ypos = simple_strtol(s + 1, NULL, 0);
}
+ }
#endif /* CONFIG_SPLASH_SCREEN_ALIGN */

- if (video_display_bitmap(addr, x, y) == 0) {
+#ifdef CONFIG_SPLASH_SCREEN
+ s = getenv("splashimage");
+ if (s != NULL) {
+
+ addr = simple_strtoul(s, NULL, 16);
+
+
+ if (video_display_bitmap(addr,
+ video_logo_xpos,
+ video_logo_ypos) == 0) {
video_logo_height = 0;
return ((void *) (video_fb_address));
}
}
#endif /* CONFIG_SPLASH_SCREEN */

- logo_plot(video_fb_address, VIDEO_COLS, 0, 0);
+ logo_plot(video_fb_address, VIDEO_COLS,
+ video_logo_xpos, video_logo_ypos);
+
+#ifdef CONFIG_SPLASH_SCREEN_ALIGN
+ /*
+ * when using splashpos for video_logo, skip any info
+ * output on video console if the logo is not@0,0
+ */
+ if (video_logo_xpos || video_logo_ypos) {
+ /*
+ * video_logo_height is used in text and cursor offset
+ * calculations. Since the console is below the logo,
+ * we need to adjust the logo height
+ */
+ video_logo_height += video_logo_ypos;
+ return video_fb_address + video_logo_height * VIDEO_LINE_LEN;
+ }
+#endif

sprintf(info, " %s", version_string);

--
1.7.1